on *:TEXT:!setpcw*:*: { 
  if ($nick isop $chan) { 
    set %world $2 
    notice $nick Changed Pest control World to $2 $+ . 
  } 
  elseif ($nick ishop $chan) {
    set %world $2
    notice $nick Changed Pest control World to $2 $+ .
  }
  else { /notice $nick Sorry, You are not a Half-Op or an Op, Only Half-Ops and Op's can set world. } 
}